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Home -> Community -> Mailing Lists -> Oracle-L -> Re: More parses than eecutes
It is the application code or the interface drivers...
For example, if you SQL trace an application executing through ODBC from connect to disconnect, you'll see lots of statements like "SELECT * FROM <table-or-view>" where they only parse but never execute. My guess is that the ODBC driver is using those calls to perform rough "describes" or something of that purpose. I see it more often from the MS-supplied ODBC drivers for Oracle rather than the Oracle-supplied ODBC drivers. The Oracle-supplied drivers tend to query ALL_OBJECTS directly, instead...
I don't know if you're using ODBC and MS-supplied Oracle ODBC drivers in particular, but that's one possible scenario. If they're not using ODBC, then the PSFT tools may themselves be doing something similar as a platform-independent way of get descriptions of database objects...?
One trick to get good SQL traces from connect to disconnect for specific user accounts: embed the DBMS_SESSION.SET_SQL_TRACE procedure inside an AFTER LOGON database-event trigger (i.e. Oracle8i new feature) for a specific user account. Once created, you can enable and disable the trigger to turn tracing on and off. Just remember to disable (or drop) this trigger when you're done tracing -- otherwise you'll *never* forget the time when you forgot! I learned the hard way, and its a good thing the production DBAs affected were so good-natured about it (beers all around go a long way!)...
Hope this helps...
Hi All,
From where comes the problem that when I check v$sqlarea & v$sqltext I get 2 executes and 4 parses or something similar.
Why would a statement that executes once be parsed twice?
Oracle 8.1.7.3
People tools 8
THX
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